Chip / Doug....

Assuming it was run in 4th gear (1:1) with a rear diff ratio of 3.62 (got that figure in my head as RWD diff ratio) on 215 40 17 tyres (which i think is what Phil is running.....

90mph is approx 4600rpm.

Looking at the graph, its somewhere around 310bhp at 90mph / 4600rpm, therefore

Torque = (310 / 4600) * 5252 = 354 lb/ft


Obviously that figure could be toooo low or toooo high, dependant on the exact revs that peak torque was made / the guess work in the power at those revs / whether I've got Phil's tyre size right and whether i've got the diff ratio right?